Campbell CSIOPC User Manual download pdf (Page 7)

PROGRAM EXECUTION RATE

Program is synchronized with real-time up to 64 Hz.

One channel can be measured at this rate with unin-

terrupted data transfer. Burst measurements up to

750 Hz are possible over short intervals.

ANALOG INPUTS

NUMBER OF CHANNELS: 6 differential or 12 single-

ended, individually configured. Channel expan-

sion provided by AM16/32 or AM416 Relay Multi-

plexers and AM25T Thermocouple Multiplexers.

ACCURACY: ±0.1% of FSR (-25° to 50°C);

±0.05% of FSR (0° to 40°C);

e.g., ±0.1% FSR = ±5.0 mV for ±2500

mV range

RANGE AND RESOLUTION:

Full Scale Resolution (µV)

Input Range (mV) Diff

erential Single-Ended

±2500 333 666

±250 33.3 66.6

±25 3.33 6.66

±7.5 1.00 2.00

±2.5 0.33 0.66

INPUT SAMPLE RATES: Includes the measurement

time and conversion to engineering units. The

fast and slow measurements integrate the signal

for 0.25 and 2.72 ms, respectively. Differential

measurements incorporate two integrations with

reversed input polarities to reduce thermal offset

and common mode errors.

Fast single-ended voltage: 2.6 ms

Fast differential voltage: 4.2 ms

Slow single-ended voltage: 5.1 ms

Slow differential voltage: 9.2 ms

Differential with 60 Hz rejection: 25.9 ms

Fast differential thermocouple: 8.6 ms

INPUT NOISE VOLTAGE (for ±2.5 mV range):

Fast differential: 0.82 µV rms

Slow differential: 0.25 µV rms

Differential with 60 Hz rejection: 0.18 µV rms

COMMON MODE RANGE: ±2.5 V

DC COMMON MODE REJECTION: >140 dB

NORMAL MODE REJECTION: 70 dB (60 Hz with

slow differential measurement)

INPUT CURRENT: ±9 nA maximum

INPUT RESISTANCE: 20 Gohms typical

ANALOG OUTPUTS

DESCRIPTION: 3 switched, active only during mea-

surement, one at a time.

RANGE: ±2.5 V

RESOLUTION: 0.67 mV

ACCURACY: ±5 mV; ±2.5 mV (0° to 40°C)

CURRENT SOURCING: 25 mA

CURRENT SINKING: 25 mA

FREQUENCY SWEEP FUNCTION: The switched

outputs provide a programmable swept frequency,

0 to 2.5 V square wave for exciting vibrating wire

transducers.

RESISTANCE MEASUREMENTS

MEASUREMENT TYPES: The CR10X provides

ratiometric bridge measurements of 4- and 6-wire

full bridge, and 2-, 3-, and 4-wire half bridges.

Precise dual polarity excitation using any of the

switched outputs eliminates dc errors.

Conductivity measurements use a dual polarity

0.75 ms excitation to minimize polarization errors.

ACCURACY: ±0.02% of FSR plus bridge resistor

error.

PERIOD AVERAGING MEASUREMENTS

The average period for a single cycle is determined by

measuring the duration of a specified number of

cycles. Any of the 12 single-ended analog input chan-

nels can be used. Signal attentuation and ac coupling

are typically required.

INPUT FREQUENCY RANGE:

Signal peak-to-peak

Min. Max

Min. Max. Pulse w. Freq.

500 mV 5.0 V 2.5 µs 200 kHz

10 mV 2.0 V 10 µs 50 kHz

5 mV 2.0 V 62 µs 8 kHz

2 mV 2.0 V 100 µs 5 kHz

Signals centered around datalogger ground

Assuming 50% duty cycle

RESOLUTION: 35 ns divided by the number of

cycles measured

ACCURACY: ±0.01% of reading (number of cycles ≥100)

±0.03% of reading (number of cycles <100)

TIME REQUIRED FOR MEASUREMENT: Signal

period times the number of cycles measured plus

1.5 cycles + 2 ms

PULSE COUNTERS

NUMBER OF PULSE COUNTER CHANNELS: 2

eight-bit or 1 sixteen-bit; software selectable as

switch closure, high frequency pulse, and low

level ac.

MAXIMUM COUNT RATE: 16 kHz, eight-bit counter;

400 kHz, sixteen-bit counter. Channels are

scanned at 8 or 64 Hz (software selectable).

SWITCH CLOSURE MODE

Minimum Switch Closed Time: 5 ms

Minimum Switch Open Time: 6 ms

Maximum Bounce Time: 1 ms open without

being counted

HIGH FREQUENCY PULSE MODE

Minimum Pulse Width: 1.2 µs

Maximum Input Frequency: 400 kHz

Voltage Thresholds: Count upon transition

from below 1.5 V to above 3.5 V at low frequen-

cies. Larger input transitions are required at high

frequencies because of input filter with 1.2 µs time

constant. Signals up to 400 kHz will be counted if

centered around +2.5 V with deviations ≥ ±2.5 V

for ≥ 1.2 µs.

Maximum Input Voltage: ±20 V

LOW LEVEL AC MODE

(Typical of magnetic pulse flow transducers or

other low voltage, sine wave outputs.)

Input Hysteresis: 14 mV

Maximum ac Input Voltage: ±20 V

Minimum ac Input Voltage:

(Sine wave mV RMS) Range (Hz)

20 1.0 to 1000

200 0.5 to 10,000

1000 0.3 to 16,000

DIGITAL I/O PORTS

8 ports, software selectable as binary inputs or

control outputs. 3 ports can be configured to count

switch closures up to 40 Hz.

OUTPUT VOLTAGES (no load): high 5.0 V ±0.1 V;

low < 0.1 V

OUTPUT RESISTANCE: 500 ohms

INPUT STATE: high 3.0 to 5.5 V; low -0.5 to 0.8 V

INPUT RESISTANCE: 100 kohms

SDI-12 INTERFACE STANDARD

Digital I/O Ports C1-C8 support SDI-12 asynchronous

communication; up to ten SDI-12 sensors can be con-

nected to each port. Meets SDI-12 Standard version

1.2 for datalogger and sensor modes.

CR10XTCR THERMOCOUPLE REFERENCE

POLYNOMIAL LINEARIZATION ERROR: Typically

<±0.5°C (-35° to +50°C), <±0.1°C (-24° to +45°C).

INTERCHANGEABILITY ERROR: Typically <±0.2°C

(0° to +60°C) increasing to ±0.4°C (at -35°C).

CE COMPLIANCE (as of 09/01)

STANDARD(S) TO WHICH CONFORMITY IS

DECLARED:

EN55022: 1995 and EN61326: 1998

EMI and ESD PROTECTION

IMMUNITY: Meets or exceeds following standards:

ESD: per IEC 1000-4-2; ±8 kV air, ±4 kV contact

discharge

RF: per IEC 1000-4-3; 3 V/m, 80-1000 MHz

EFT: per IEC 1000-4-4; 1 kV power, 500 V I/O

Surge: per IEC 1000-4-5; 1 kV power and I/O

Conducted: per IEC 1000-4-6; 3 V 150 kHz-80 MHz

Emissions and immunity performance criteria available

on request.

CPU AND INTERFACE

PROCESSOR: Hitachi 6303

PROGRAM STORAGE: Up to 16 kbytes for active

program; additional 16 kbytes for alternate

programs. Operating system stored in 128 kbytes

Flash memory.

DATA STORAGE: 128 kbytes SRAM standard

(approximately 60,000 data values). Additional

2 Mbytes Flash available as an option.

OPTIONAL KEYBOARD DISPLAY: 8-digit LCD

(0.5" digits)

PERIPHERAL INTERFACE: 9 pin D-type connector

for keyboard display, storage module, modem,

printer, card storage module, and RS-232

adapter.

BAUD RATES: Selectable at 300, 1200, 9600

and 76,800 bps for synchronous devices. ASCII

communication protocol is one start bit, one stop

bit, eight data bits (no parity).

CLOCK ACCURACY: ±1 minute per month

SYSTEM POWER REQUIREMENTS

VOLTAGE: 9.6 to 16 Vdc

TYPICAL CURRENT DRAIN: 1.3 mA quiescent,

13 mA during processing, and 46 mA during

analog measurement.

BATTERIES: Any 12 V battery can be connected as

a primary power source. Several power supply

options are available from Campbell Scientific.

The Model CR2430 lithium battery for clock and

SRAM backup has a capacity of 270 mAhr.

PHYSICAL SPECIFICATIONS

SIZE: 7.8" x 3.5" x 1.5" - Measurement & Control

Module; 9" x 3.5" x 2.9" - with CR10WP Wiring

Panel. Additional clearance required for serial

cable and sensor leads.

WEIGHT: 2 lbs

WARRANTY

Three years against defects in materials and

workmanship.

CR10X Specifications

Electrical specifications are valid over a -25° to +50°C range unless otherwise specified; non-condensing environment

required. To maintain electrical specifications, Campbell Scientific recommends recalibrating dataloggers every two years.

Campbell Scientific, Inc.

Printed March 2004

We recommend that you confirm system

configuration and critical specifications with

Campbell Scientific before purchase.

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